4Spoon one-third of the sauce into baking dish; top with 3 of the tortillas. Spoon half of the meat mixture over tortillas; top with another one-third of the sauce and 1 cup of the Cheddar cheese. Top with 3 tortillas. Repeat layers with remaining meat mixture, sauce, Cheddar cheese and tortillas. Sprinkle with 1 cup of the Monterey Jack cheese.